Word: copper
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Dates: during 1930-1939
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...make a daguerreotype, a silver-plated copper plate, scrupulously clean, was subjected to the vapor from iodine until it turned a golden orange color. With the subject's neck held rigidly in an iron clamp the plate was exposed in a camera for from three to 30 minutes, developed by holding it over a cup of hot mercury, fixed by dipping in a mixture of hyposulphite of soda and gold chloride. Finger marks and heat ruin the image of a daguerreotype...
...cheap silk ribbon is used as conveyor belts from two small electric generators to two 2-ft. copper spheres mounted on glass rods. The ribbons pass into the spheres through slits and over pulleys on cams within the spheres. At the generators, from copper brushes, the ribbons pick up small charges of electricity, one ribbon positive, the other negative. Entering the copper balls, the electric charges are taken from the ribbon (silk is a less good conductor than copper) and stored on the balls' copper surfaces. Large voltages accumulate quickly as the ribbons whiz through their slits, silent...
...Graaff demonstrated his machine last week in a dark laboratory at Princeton, a soft crackling sound was heard, electricity "spilling" from the copper balls in a "corona" effect. Before spilling, each ball had stored 750,000 volts from the whizzing ribbons. The hair of everyone in the room slowly rose and stood on end in the galvanized atmosphere. Then came a sharp report and the spectators' hair fell back into place as a bright i.500,000-volt shaft of lightning shot from one ball to the other, the overflowing positive and negative charges rushing together. Significance was that this...
...year-old Catholic priest, Rev. Julius Arthur Nieuwland, C.S.C., of Notre Dame University. Father Nieuwland, born a Belgian, at tended Notre Dame and later settled down in South Bend to a life of avowed poverty and chemical research. In 1906 he passed some acetylene into a copper salt mixture and obtained therefrom a strange and terrific stench...
Against any cut in rail wages is aligned Labor's strongest force. Steel, copper, textile & other great industries could- and did-cut wages (TIME, Oct. 5) without any great outcry from Labor. But railroad workers are most strongly organized. Their 21 unions contain 1,300,000 members, many affiliated with the American Federation of Labor, others (including the potent Big Four Railroad Brotherhoods-410,000 engineers, firemen, trainmen, conductors) not so affiliated. In times of trouble the railroad unions work together, as in 1916 when they got the Adamson Act and the eight-hour day. Three weeks...